Wake effects are important. Please calaculate OK wake effect 94% That's not too bad ! Remember: Offshore wake decay is different Low turbulence: Probably 0.04 What ! That's bad ! Compromize: Wake induced turbulence included Wake decay 0.05 OK â what is it? OK wake effect 88% OK wake effect 90%
Steel Mills Use Manganese: The most important use of manganese is in the manufacturing of steel. Manganese gives the steel strength and hardness. Without manganese, the steel used to make armor plate, crusher jaws, and impact tools would not be as durable. Image Â© iStockphoto / Huyangshu.
Elements and Periodic Table History. Manganese in the form of the black ore pyrolucite (manganese dioxide, MnO 2) was used by the pre-historic cave painters of the Lascaux region of France around 30,000 years ago. In more recent times was used by glass makers to remove the pale greenish tint of natural glass.